Precious stone cut of a bottom portion with six chevrons



FIG. 1 is a top plan view of a precious stone cut of a bottom portion with six chevrons showing my new design;

FIG. 2 is a side view; and,

FIG. 3 is a bottom view.

The broken line showing of the crown of a gemstone is included for the purpose of illustrating environmental matter and forms no part of the claimed design. 

The ornamental design for a precious stone cut of a bottom portion with six chevrons, as shown and described. 